<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style2.css">
    <title>index_test</title>

</head>


<body>
    <div>
    <div class="nav">导航栏</div> 

    <div class="blog">
        <div id="blog_side"> 侧边栏</div>
        <div id="blog_main"> 主要内容页</div>
    </div>
    <div id="footer">页脚</div>
</div>

</body>
</html>